CatDat

simplex category

The simplex category is a skeleton of FinOrd{}\mathbf{FinOrd} \setminus \{\varnothing\}. It plays an important role in topology and is used to define the category of simplicial sets.

Satisfied Properties

Properties from the database

Deduced properties

Unsatisfied Properties

Properties from the database

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

There are 2 properties for which the database doesn't have an answer if they are satisfied or not. Please help to contribute the data!

Special objects

Special morphisms

  • isomorphisms: bijective order-preserving maps
  • monomorphisms: injective order-preserving maps
  • epimorphisms: surjective order-preserving maps
  • regular monomorphisms: same as monomorphisms
  • regular epimorphisms: same as epimorphisms